Publicly accessible Azure App Service app has an assigned managed identity with administrator-equivalent RBAC rights

Description

A publicly accessible Azure App Service app has an assigned managed identity with administrator-equivalent Azure RBAC rights at the tenant root, a management group, or a subscription. If the app is compromised, an attacker could use the managed identity to control resources and security settings within that scope.

Remediation

  1. Restrict public network access to the app by configuring access restrictions or a private endpoint. See Azure App Service access restrictions.
  2. Remove administrator-equivalent role assignments from the managed identity and grant only the permissions required by the workload. See Remove Azure role assignments.